[{
    "labels": [{"key": "name", "value": "l4-rules"}],
    "endpointSelector": {"matchLabels":{"role":"backend"}},
    "ingress": [{
        "fromEndpoints": [
          {"matchLabels":{"role":"frontend"}}
        ]
      }, {
        "toPorts": [
            {"ports":[ {"port": "80", "protocol": "TCP"}]}
        ]
    }]
}]
